Smooshing and SIM-Swapping: A Growing Threat to Your Financial Security

Security and Fraud

Your phone number is more powerful than you may realize. In a SIM-swapping scam, also known as smooshing, fraudsters take control of your phone number to bypass security measures and break into your financial accounts. Understanding how these scams work is one of the best defenses against becoming a victim.

How does a SIM-Swap Scam Work?

Fraudsters use multiple tactics to gather your information and transfer your phone number without your knowledge:

Collecting your personal data

Criminals first gather personal identifiable information (PII) through phishing emails, social media, data breaches, and social engineering.

Impersonating you with your phone carrier

The scammer contacts your mobile phone provider pretending to be you. Using the stolen PII information, they convince the carrier to activate your phone number on a new SIM card — one they can control.

Intercepting your calls and messages

Once the SIM swap is complete, fraudsters begin receiving:

  • Your incoming calls
  • Your text messages
  • Your secure access codes (SACs)

With these authentication codes, scammers can break into:

  • Online banking
  • Bank accounts
  • Person-to-person payment apps like Venmo, Apple Cash, Cash App, and more

How Can I Protect Myself?

Be cautious with unsolicited calls or messages.

If you receive an unexpected call or text asking for personal information, do not respond. If the caller claims to be from your bank or credit union, hang up and call the bank or credit union using a verified phone number on their website and explain the situation.

Add a PIN or passcode to your mobile account.

Contact your phone carrier and set up a required PIN or passcode for account changes. Avoid PINs that are easy to guess, such as birthdays or anniversaries.

Limit personal information shared online.

Even small details — like your full birthdate or pet names — can help fraudsters impersonate you. Review your privacy settings on social media and remove sensitive information.

Send unknown callers to voicemail.

Many smartphones have features that automatically screen calls or silence calls from unknown numbers. Use these tools to reduce the chance of engaging with scammers.

Lost Cell Service out of the Blue or Think This Has Happened to You?

If your phone suddenly stops receiving calls or texts, or you suspect a SIM-swap attack, act immediately:

Contact your phone carrier right away.

Ask them to verify recent changes, freeze your account, and restore your number to your device.

Notify your bank or credit union.

Report the fraud as soon as possible. If unauthorized transactions occurred due to the SIM swap, you may be asked to provide additional information and supporting documentation:

  • A signed statement confirming the SIM swap and your non-participation in the transactions.
  • Supporting evidence like carrier confirmations, screenshots, or timestamps.

Report scam calls or fraudulent activity to the FTC.

If a scam call led to the SIM swap, submit a report at: https://reportfraud.ftc.gov/.

Update the passwords on all of your accounts.

Change login credentials for banking apps, email, social media, and payment platforms. Enable multi-factor authentication where possible — preferably using an authentication app rather than SMS.

Being the victim of a SIM-swap scam can be overwhelming and may lead to serious financial impacts. But understanding how to protect yourself — and knowing what steps to take if something happens — can significantly improve your recovery. As your trusted financial partner, we’re here to help you stay secure and support you every step of the way.

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